Excavations in Jerusalem’s Armon Hanatziv neighborhood have revealed a 40-meter piece of the capital’s ancient main water carrier dating back to the Hasmonean era 2100+ years ago. The complete 21 km aqueduct was in use until the British replaced it with electric pumps.
https://www.timesofisrael.com/new-segment-of-jerusalems-2000-year-old-low-level-aqueduct-revealed/